Removing Corrosion from copper wire

I have a coil of "new" stranded copper wire that I bought several years ago and didn't use at the time.

I need to repair a dipole antenna that came down in a tornado (a tree fell on it) and noticed that there is some corrosion which prevents the wire from wicking the solder for a good clean tinning/solder job.

A fellow ham in the area suggested using either distilled vinegar or ammonia to remove the corrosion. I did a test using both and used a solution of baking soda to neutralize the process after soaking the test pieces overnight. I found that neither worked - the copper looked clean enough, but it still did not wick the solder and the solder on the surface had the appearance of a typical cold solder joint..

Someone who works with silver solder on jewelry suggested using hydrochloric acid, but I don't trust using a corrosive acid again.

Asking ASK.COM, I saw a suggestion to use one of the copper cleaners for copper clad cooking pots. I haven't tried it yet and wondered if anyone would care to share experience with this or another method. I wonder if the wire would have to be unbraided to be able to clean the inside ot the strand.

I appreciate the prompt reply and appreciate the suggestion. I had thought of this possibility, but have never had any problems before even when soldering RG8 braid to a PL259 coax connector.

I am using a weller 140 watt gun with a brand new tip as well. I am, however using 60/40 resin core solder that is fairly thin (I had run out of the thicker stuff for heavier duty), so my next step - besides trying to find a better way of removing the corrosion - was going to be a trip to the electronics store to replenish my roll of thicker solder.

Meantime, I'd appreciate your thoughts about the thickness, although I have always been able to get good results simply by using a longer piece of the thinner solder. You might also ask around, if you don't mind, about the compatibility of the copper pot cleaners with electronic applications.

For solid and stranded copper wire, I have had some success with using steel wool, ranging from the fluffy and soft to the abrasive and coarse. Watch your fingers and hands with the more abrasive kinds.

But, I have never soldered the wire after cleaning it, so I don't know if it will be clean enough for soldering and your own requirements.

All I know is the wire becomes hot when you wrap the steel wool around it and either pull or push-pull the steel wool up and down the line, making it very shiny. You can probably clean the amount you need easier if you clean it before removing it from the spool, which will help to anchor the wire as you clean it.

Consider eye protection as you will want to blow off the excess from the cleaned wire and you may have a slight mess of steel wool to clean up.

It's possible that water (or ???) wicked up into the stranding of the wire. If you cut of 2 or 3 feet, you may find that the wire is in good condition past that point.

If not, there is something really odd about the wire. In that case, I would be inclined to just toss that wire and buy some new wire. If for some reason, the copper is corroded, it is likely that you will run into this again and again. Although the price of copper is high right now, as is the cost of wire, in the long run, you will be glad to have good wire to use for antennas and other projects.